Preparation method and application of efficient PI aerogel/PMS filter membrane

• Main Authors: SHEN XIAODONG, LIU SIJIA, NIE YIHAO, ZHAO XINFU, YUAN ZHIPENG, YU SHIMO, LIU BENXUE, YI XIBIN, LIU XIAOCHAN, ZHANG JING
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Directed at problems existing in a heterogeneous catalyst activation technology for pollutant degradation in the prior art, the invention discloses a PI aerogel film with an ultrahigh specific surface area prepared by using a CO2 supercritical drying method. The PI aerogel film is proposed to activate PMS degradation pollutants for the first time; the aerogel film can be directly used in a filtering device and shows high degradation efficiency; operation is simple, and recovery is convenient; and the aerogel film can be moved and placed at will, so industrial application of the aerogel film is expected to be realized. 本发明针对目前污染物降解用多相催化剂活化技术中存在的问题，首先以CO2超临界干燥法制备出超高比表面积的PI气凝胶膜，首次提出以此PI气凝胶膜活化PMS降解污染物，该气凝胶膜可直接用于过滤装置中，表现出高效的降解效率，操作简单，回收方便，且此气凝胶膜可随意移动和安置，有望实现工业化应用。